SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

From the v-t graph, ______ can be calculated.

Slope of the velocity-time graph gives ______.

The area of the velocity-time graph gives the displacement of the body.

What is a lactometer? Explain its principle and work.

Petroleum-based products float on the surface of the water. This is due to their low ______.

1. volume
2. density
3. specific gravity
4. viscosity

The density of the substance is the ______ of a given substance.

Write the SI unit & symbol for density?

An AC generator is provided with ______ slip rings that rotate with the coil.

What is the concept of temperature?

Give reasons why –

a steam burn is more damaging than a burn caused by boiling water at the same temperature.

Give reasons why –

an igloo is built as a winter shelter

Give reasons why –

gaps are left between railway tracks

Give reasons why –

chimneys are located high up in kitchens and factories

Give reasons why –

we wear woolen clothes in winter

Water is used as a coolant because it ______.

The amount of heat required to raise the temperature to 1°C is called ______.

While a substance is undergoing a change of state, the temperature of the body remains ______.

______ is the degree of hotness or coldness of a body.

What is the other name for heat capacity?

Which factor determines the direction of flow of heat from one body to another?